Air-chamber for liquid-spraying devices.



A. M. PHILLIPS.

AIR-CHAMBER FOR LIQUID SPBAYING DEVICES. APPLICATION FILED JULY 31,1907.

93 1,2 1 5. Patented Aug. 17, 1909.

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hwy 3% g UNITED STATES PATENT OFFICE.

ADELBERT M. PHILLIPS, OF LE ROY, NEW YORK.

AIR-CHAMBER FOR LIQUID-SPBAYING- DEVICES.

To all whom it may concern.

Be it known that I, Annnnnn'r M. PH1L- Lirs, a citizen of the UnitedStates, residing at Le Boy, in the county of Genesee and State of NewYork, have invented new and useful Improvements in Air-Chambers forLiquid-Spraying Devices, of which the following is a specification.

This invention relates to air chambers for liquid spraying devices ofthat class which includes a pump for forcing liquid from a tank orreceptacle through a spraying nozzle; the air chamber being utilized forthe purpose of insuring a constant and steady flow of the liquid throughthe discharge nozzle, instead of an intermittent discharge such as wouldordinarily be caused by the pulsations of the pump.

Spraying devices of this class are largely used for the purpose ofsupplying medicated and poisonous liquids to fruit trees, vines andother plants in order to promote growth and for the destruction ofpests, and the liquid employed frequently contains a large proportion ofinsoluble substances which unless constant agitation is kept up are aptto interfere with the operation of the device.

The object of the present invention is to overcome this objection, andto provide straining means whereby the sediment is excluded from thespraying nozzles, and thus prevented from interfering with theoperation.

lVith these and other ends in view as will appear as the nature of theinvention is better understood, the same consists in the improvedconstruction and novel arrangement and combination of parts which willhereinafter be fully described and particularly pointed out in theclaim.

In the accompanying drawing has been illustrated a simple and preferredform of the invention; it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theclaim may be resorted to when desired.

In the drawing :Figure 1 is a side elevation of the device embodying theinvention. Fig. 2 is a vertical sectional view taken on the planeindicated by the line 22 in Fig. 1.

Corresponding parts in the several figures are denoted by likecharacters of reference.

An air chamber has been shown which Specification of Letters Patent.

Application filed July 31, 1907.

Patented Aug. 17, 1909.

Serial No. 386,443.

consists of a cylinder 1 provided with upper and lower removable heads 2and 3 one of which, preferably the head 3 at the lower end of thechamber, is formed with a cup shaped depression 4 of suitabledimensions. A strainer 5, consisting of a foraminous diaphragm isinterposed between the cylinder 1 and the head 3. The cup-shaped recessat has an inlet- 6 which is connected by a pipe or duct 7 with the pump8 which is utilized for forcing liquid from a tank or receptacle, notshown, to the air chamber; and the latter provided with an outlet 9formed at the lower end of the cylinder 1 above and adjacent to thescreen or strainer 5; said outlet being provided with a. flexibledischarge pipe 10 having a spraying nozzle 11; it being understood,however, that a non-flexible discharge pipe may be used, if preferred,and that a plurality of nozzles of any desired construction may be usedas is frequently the case when the invention is applied to sprayingapparatus of large capacity. The lower extremity of the cup shapedrecess 4% is provided with a valved discharge nozzle 12.

In the operation of this device the spraying liquid is forced by thepump 8 into the cup shaped recess, which constitutes a settling chamberof the air chamber; the liquid being forced upward into the cylindricalportion of the air chamber and through the screen or strainer 5, whichintercepts all the coarse particles suspended in the liquid; the latter,free from the obstructing particles, will rise in the cylinderconstituting the air chamber and will be discharged in a constant streamfrom the latter, through the outlet 9, by the air cushion formed in theupper part of the chamber. The sediment may be removed fromthe cup orreceptacle which constitutes the settling chamber, whenever desired,through the valved outlet 12.

This invention, while extremely simple and readily applied .to anexisting apparatus, forms a safe guard against frequent obstructions ofthe nozzles, and saves the time required for the purpose of keeping thenozzles clean and unobstructed.

Having thus described the invention, what is claimed as new, is

In a device of the class described, the combination with a cylinderprovided with upper and lower removable heads, a settling chambercarried by the lower head and provided at the bottom thereof with avalve and in the side thereof with an inlet passage, a sure will beestablished so that liquid can 10 strainer carried by the lower head andexbe discharged from said discharge pipe. tending across the settlingchamber, a dis- In testimony whereof I afliX my signacharge pipe at theextreme lower end of the ture in presence of two witnesses.

cylinder and disposed directly above the ADELBEPT M PHILT strainer, aliquid pump, a pipe connecting b J the pump with a settling chamberadjacent Witnesses:

to the bottom thereof so that when liquid is L. M. LANsBUnY,

forced underprcssnre into the cylinder, pres- A. C. CA'IER.

